PHP实现的购物车类实例
发布:smiling 来源: PHP粉丝网 添加日期:2021-05-28 20:30:40 浏览: 评论:0
这篇文章主要介绍了PHP实现的购物车类,可实现购物车基本的加入、删除、统计等相关功能,需要的朋友可以参考下
本文实例讲述了PHP实现的购物车类。分享给大家供大家参考。具体分析如下:
该购物车类是基于CodeIgniter的购物车类仿写实现的。
购物车基本功能如下:
1) 将物品加入购物车
2) 从购物车中删除物品
3) 更新购物车物品信息 【+1/-1】
4) 对购物车物品进行统计
1. 总项目
2. 总数量
3. 总金额
5) 对购物单项物品的数量及金额进行统计
6) 清空购物车
1. cart.php文件:
- <?php
- /**
- *
- * @author quanshuidingdang
- */
- class Cart {
- //物品id及名称规则,调试信息控制
- private $product_id_rule = '\.a-z0-9-_'; //小写字母 | 数字 | ._-
- private $product_name_rule = '\.\:a-z0-9-_';//小写字母 | 数字 | ._-:
- private $debug = TRUE;
- //购物车
- private $_cart_contents = array();
- /**
- * 构造函数
- *
- * @param array
- */
- public function __construct() {
- //是否第一次使用?
- if(isset($_SESSION['cart_contents'])) {
- $this->_cart_contents = $_SESSION['cart_contents'];
- } else {
- $this->_cart_contents['cart_total'] = 0;
- $this->_cart_contents['total_items'] = 0;
- }
- if($this->debug === TRUE) {
- //$this->_log("cart_create_success");
- }
- }
- /**
- * 将物品加入购物车
- *
- * @access public
- * @param array 一维或多维数组,必须包含键值名:
- id -> 物品ID标识,
- qty -> 数量(quantity),
- price -> 单价(price),
- name -> 物品姓名
- * @return bool
- */
- public function insert($items = array()) {
- //输入物品参数异常
- if( ! is_array($items) OR count($items) == 0) {
- if($this->debug === TRUE) {
- $this->_log("cart_no_items_insert");
- }
- return FALSE;
- }
- //物品参数处理
- $save_cart = FALSE;
- if(isset($items['id'])) {
- if($this->_insert($items) === TRUE) {
- $save_cart = TRUE;
- }
- } else {
- foreach($items as $val) {
- if(is_array($val) AND isset($val['id'])) {
- if($this->_insert($val) == TRUE) {
- $save_cart = TRUE;
- }
- }
- }
- }
- //当插入成功后保存数据到session
- if($save_cart) {
- $this->_save_cart();
- return TRUE;
- }
- return FALSE;
- }
- /**
- * 更新购物车物品信息
- *
- * @access public
- * @param array
- * @return bool
- */
- public function update($items = array()) {
- //输入物品参数异常
- if( !is_array($items) OR count($items) == 0) {
- if($this->debug === TRUE) {
- $this->_log("cart_no_items_insert");
- }
- return FALSE;
- }
- //物品参数处理
- $save_cart = FALSE;
- if(isset($items['rowid']) AND isset($items['qty'])) {
- if($this->_update($items) === TRUE) {
- $save_cart = TRUE;
- }
- } else {
- foreach($items as $val) {
- if(is_array($val) AND isset($val['rowid']) AND isset($val['qty'])) {
- if($this->_update($val) === TRUE) {
- $save_cart = TRUE;
- }
- }
- }
- }
- //当更新成功后保存数据到session
- if($save_cart) {
- $this->_save_cart();
- return TRUE;
- }
- return FALSE;
- }
- /**
- * 获取购物车物品总金额
- *
- * @return int
- */
- public function total() {
- return $this->_cart_contents['cart_total'];
- }
- /**
- * 获取购物车物品种类
- *
- * @return int
- */
- public function total_items() {
- return $this->_cart_contents['total_items'];
- }
- /**
- * 获取购物车
- *
- * @return array
- */
- public function contents() {
- return $this->_cart_contents;
- }
- /**
- * 获取购物车物品options
- *
- * @param string
- * @return array
- */
- public function options($rowid = '') {
- if($this->has_options($rowid)) {
- return $this->_cart_contents[$rowid]['options'];
- } else {
- return array();
- }
- }
- /**
- * 清空购物车
- *
- */
- public function destroy() {
- unset($this->_cart_contents);
- $this->_cart_contents['cart_total'] = 0;
- $this->_cart_contents['total_items'] = 0;
- unset($_SESSION['cart_contents']);
- }
- /**
- * 判断购物车物品是否有options选项
- *
- * @param string
- * @return bool
- */
- private function has_options($rowid = '') {
- if( ! isset($this->_cart_contents[$rowid]['options']) OR count($this->_cart_contents[$rowid]['options']) === 0) {
- return FALSE;
- }
- return TRUE;
- }
- /**
- * 插入数据
- *
- * @access private
- * @param array
- * @return bool
- */
- private function _insert($items = array()) {
- //输入物品参数异常
- if( ! is_array($items) OR count($items) == 0) {
- if($this->debug === TRUE) {
- $this->_log("cart_no_data_insert");
- }
- return FALSE;
- }
- //如果物品参数无效(无id/qty/price/name)
- if( ! isset($items['id']) OR ! isset($items['qty']) OR ! isset($items['price']) OR ! isset($items['name'])) {
- if($this->debug === TRUE) {
- $this->_log("cart_items_data_invalid");
- }
- return FALSE;
- }
- //去除物品数量左零及非数字字符
- $items['qty'] = trim(preg_replace('/([^0-9])/i', '', $items['qty']));
- $items['qty'] = trim(preg_replace('/^([0]+)/i', '', $items['qty']));
- //如果物品数量为0,或非数字,则我们对购物车不做任何处理!
- if( ! is_numeric($items['qty']) OR $items['qty'] == 0) {
- if($this->debug === TRUE) {
- $this->_log("cart_items_data(qty)_invalid");
- }
- return FALSE;
- }
- //物品ID正则判断
- if( ! preg_match('/^['.$this->product_id_rule.']+$/i', $items['id'])) {
- if($this->debug === TRUE) {
- $this->_log("cart_items_data(id)_invalid");
- }
- return FALSE;
- }
- //物品名称正则判断
- if( ! preg_match('/^['.$this->product_name_rule.']+$/i', $items['name'])) {
- if($this->debug === TRUE) {
- $this->_log("cart_items_data(name)_invalid");
- }
- return FALSE;
- }
- //去除物品单价左零及非数字(带小数点)字符
- $items['price'] = trim(preg_replace('/([^0-9\.])/i', '', $items['price']));
- $items['price'] = trim(preg_replace('/^([0]+)/i', '', $items['price']));
- //如果物品单价非数字
- if( ! is_numeric($items['price'])) {
- if($this->debug === TRUE) {
- $this->_log("cart_items_data(price)_invalid");
- }
- return FALSE;
- }
- //生成物品的唯一id
- if(isset($items['options']) AND count($items['options']) >0) {
- $rowid = md5($items['id'].implode('', $items['options']));
- } else {
- $rowid = md5($items['id']);
- }
- //加入物品到购物车
- unset($this->_cart_contents[$rowid]);
- $this->_cart_contents[$rowid]['rowid'] = $rowid;
- foreach($items as $key => $val) {
- $this->_cart_contents[$rowid][$key] = $val;
- }
- return TRUE;
- }
- /**
- * 更新购物车物品信息(私有)
- *
- * @access private
- * @param array
- * @return bool
- */
- private function _update($items = array()) {
- //输入物品参数异常
- if( ! isset($items['rowid']) OR ! isset($items['qty']) OR ! isset($this->_cart_contents[$items['rowid']])) {
- if($this->debug == TRUE) {
- $this->_log("cart_items_data_invalid");
- }
- return FALSE;
- }
- //去除物品数量左零及非数字字符
- $items['qty'] = preg_replace('/([^0-9])/i', '', $items['qty']);
- $items['qty'] = preg_replace('/^([0]+)/i', '', $items['qty']);
- //如果物品数量非数字,对购物车不做任何处理!
- if( ! is_numeric($items['qty'])) {
- if($this->debug === TRUE) {
- $this->_log("cart_items_data(qty)_invalid");
- }
- return FALSE;
- }
- //如果购物车物品数量与需要更新的物品数量一致,则不需要更新
- if($this->_cart_contents[$items['rowid']]['qty'] == $items['qty']) {
- if($this->debug === TRUE) {
- $this->_log("cart_items_data(qty)_equal");
- }
- return FALSE;
- }
- //如果需要更新的物品数量等于0,表示不需要这件物品,从购物车种清除
- //否则修改购物车物品数量等于输入的物品数量
- if($items['qty'] == 0) {
- unset($this->_cart_contents[$items['rowid']]);
- } else {
- $this->_cart_contents[$items['rowid']]['qty'] = $items['qty'];
- }
- return TRUE;
- }
- /**
- * 保存购物车数据到session
- *
- * @access private
- * @return bool
- */
- private function _save_cart() {
- //首先清除购物车总物品种类及总金额
- unset($this->_cart_contents['total_items']);
- unset($this->_cart_contents['cart_total']);
- //然后遍历数组统计物品种类及总金额
- $total = 0;
- foreach($this->_cart_contents as $key => $val) {
- if( ! is_array($val) OR ! isset($val['price']) OR ! isset($val['qty'])) {
- continue;
- }
- $total += ($val['price'] * $val['qty']);
- //每种物品的总金额
- $this->_cart_contents[$key]['subtotal'] = ($val['price'] * $val['qty']);
- }
- //设置购物车总物品种类及总金额
- $this->_cart_contents['total_items'] = count($this->_cart_contents);
- $this->_cart_contents['cart_total'] = $total;
- //如果购物车的元素个数少于等于2,说明购物车为空
- if(count($this->_cart_contents) <= 2) {
- unset($_SESSION['cart_contents']);
- return FALSE;
- }
- //保存购物车数据到session
- $_SESSION['cart_contents'] = $this->_cart_contents;
- return TRUE;
- }
- /**
- * 日志记录
- *
- * @access private
- * @param string
- * @return bool
- */
- private function _log($msg) {
- return @file_put_contents('cart_err.log', $msg, FILE_APPEND);
- }
- }
- /*End of file cart.php*/
- /*Location /htdocs/cart.php*/
2. cart_demo.php文件如下:
- <?php
- session_start();
- require_once('cart.php');
- $items = array(
- 0 => array(
- 'id' => 'sp001',
- 'qty' => 20,
- 'price' => '10.50',
- 'name' => 'a002',
- 'options' => array(
- 'made' => 'china',
- 'company' => 'bgi'
- )
- ),
- 1 => array(
- 'id' => 'sp002',
- 'qty' => 1,
- 'price' => '3.50',
- 'name' => 'b002'
- )
- );
- $arr = array(
- 'rowid' => '86dbb7cb58a667558b4bbb1f60330028',
- 'qty' => 21
- );
- $cart = new Cart();
- $cart->insert($items);
- //var_dump($cart->contents());
- $cart->update($arr);
- var_dump($cart->contents());
- //$cart->destroy();
- //var_dump($_SESSION['cart_contents']);
- /*end of php*/
Tags: PHP购物车类
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相关文章
- ·PHP实现的比较完善的购物车类(2021-05-01)
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